TABLE 4

Mutability of snw in the grandsons of crosses between (TP5) snw and Su(var)2054/Cy Roi stocks

Non-Curly sonsCurly sons
Genotype of motheraClassbNo. vialsNo. fliesMutation ratecClassbNo. vialsNo. fliesMutation ratec
Cross I. (TP5) snw ♀♀ × y ♂♂ [no effect of factors in Su(var)2054/Cy Roi stock]
Control flies
    snw/y5617260.492 ± 0.015
TP5 flies
    TP5 snw/y6019510.050 ± 0.007
Cross II. (TP5) snw; Su(var)2054/Cy Roi ♀♀ × y ♂♂ [cumulative effect of factors in Su(var)2054/Cy Roi stock]
Control flies
    (SV) snw/y; Su(var)2054/+15815840.558 ± 0.017d
    (CR) snw/y; Cy Roi/+26015600.580 ± 0.01734914470.627 ± 0.017
TP5 flies
    (SV) TP5 snw/y; Su(var)2054/+15817800.522 ± 0.016d
    (CR) TP5 snw/y; Cy Roi/+25917980.490 ± 0.02034212400.532 ± 0.019
Cross III. (TP5) snw ♀♀ × y; Su(var)2054/Cy Roi ♂♂ [two-generation effect of factors in Su(var)2054/Cy Roi stock]
Control flies
    (SV) snw/y; Su(var)2054/+15915620.467 ± 0.018d
    (CR) snw/y; Cy Roi/+23710600.501 ± 0.0173429460.538 ± 0.017
TP5 flies
    (SV) TP5 snw/y; Su(var)2054/+16017200.275 ± 0.026d
    (CR) TP5 snw/y; Cy Roi/+25114150.138 ± 0.0183308420.203 ± 0.020
  • a Mothers were obtained from the crosses indicated and then crossed to homozygous H(hsp/CP)3 males. See text for details.

  • b See text for explanation of classes.

  • c Unweighted average ± standard error.

  • d Half the sons tested were expected to carry the Su(var)2054 mutation.